Real-time EUR/CHF forex rate via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint returns the current EUR/CHF foreign exchange rate, accessible through the x402 payment protocol on the Base network. Each request costs $0.02 (20,000 base units of USDC with 6 decimals) and requires no API keys, accounts, or rate limits — just an x402-compatible payment header.
The endpoint is part of a broader API platform at lowpaymentfee.com that offers data & analytics, AI/ML inference, finance & Web3, and infrastructure utility endpoints, all priced uniformly at $0.02 per call. Payment settles on-chain via USDC on Base to the provider's wallet. The x402 challenge confirms the endpoint is live and accepting POST requests with JSON responses.
Documentation beyond the landing page is sparse — the /docs, /pricing, and /README pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no example request/response payloads, and no description of the response schema. The exact data source for the forex rate is not disclosed.
Capabilities
Use cases
- —Fetching the current EUR/CHF spot rate for trading bots or financial dashboards
- —Integrating real-time forex data into agent workflows without API key management
- —Pay-per-call currency rate lookups for low-volume or sporadic use cases
Fit
Best for
- —Agents or bots that need on-demand EUR/CHF rates without subscription commitments
- —Developers prototyping forex-dependent features with minimal setup
- —x402-native applications settling micropayments on Base
Not for
- —High-frequency trading requiring sub-millisecond latency or bulk historical data
- —Users who need comprehensive multi-pair forex coverage from a single endpoint
- —Applications that cannot handle on-chain USDC payments on Base
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/forex/EURCHF/rate \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_header>"Endpoint
Quality
The x402 challenge is live and confirms pricing and payment details, but there is no OpenAPI spec, no documented request/response schema, no example payloads, and the docs pages are empty beyond a wallet connect prompt. The endpoint's data source and response format are entirely unknown.
Warnings
- —No OpenAPI or schema documentation available — response format must be discovered empirically
- —Docs, pricing, and README pages render only 'Connect wallet' with no technical content
- —Data source for the EUR/CHF rate is undisclosed; accuracy and freshness guarantees are unknown
Citations
- —The endpoint returns HTTP 402 with an x402 challenge requiring 20,000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/forex/EURCHF/rate
- —All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/forex/EURCHF/rate